Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Grand Ridge Wind Energy Center | Old Trail Wind Farm |
|---|---|---|
| Capacity | 210 MW | 213.8 MW |
| Technology | Onshore Wind Turbine | Onshore Wind Turbine |
| Operator | Invenergy Services LLC | Old Trail Wind Farm LLC |
| Operating units | 4 | 1 |
| Latest 12-month generation | 485.5 GWh | 570.5 GWh |
| Latest complete-year capacity factor | 26.3% (2024) | 29.7% (2025) |
| National technology rank | #212 of 1,362 | #204 of 1,362 |
| Latest EIA report | 2024-12 | 2026-06 |